2003 Cadillac Deville electrical system problems
52 owner complaints filed with NHTSA name the electrical system on the 2003 Cadillac Deville — 36% of all complaints for this model year.
What owners report
“The contact owns a 2003 Cadillac Deville. The contact stated that the ignition switch seized. Occasionally, the contact was able to wiggle the switch for the ignition to operate. The contact stated that the ignition switch failed to turn or operate as needed. The vehicle was taken to an independent…”
filed Aug 25, 2026
“The contact owns a 2003 Cadillac DeVille. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The power steering was inoperable. In addition, the contact stated that the message that the key was not detected was displayed. The contact stated that the vehicle was…”
filed Mar 12, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- In the affected vehicles, the weight on the key ring and road conditions or some other…Campaign 14V355000 · Jun 23, 2014
Related service bulletins
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723J · Service Bulletin/Repair Instructions · issued Oct 25, 2024Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to…
General Communication · Service Campaign · issued Aug 26, 2024
Electrical System problems in other Deville years
| Year | Reports | Share |
|---|---|---|
| 2005 Deville | 34 | 36% |
| 2004 Deville | 47 | 28% |
| 2002 Deville | 45 | 26% |
| 2001 Deville | 45 | 26% |
| 2000 Deville | 60 | 27% |
| 1999 Deville | 20 | 11% |
| 1998 Deville | 21 | 9% |
| 1997 Deville | 28 | 10% |
| 1996 Deville | 17 | 8% |
| 1995 Deville | 20 | 16% |
| 1994 Deville | 15 | 12% |
| 1993 Deville | 11 | 12% |
Other reported problem areas on the 2003 Cadillac Deville
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.